瑞星每次都清除成功,但重启又有.以下是瑞星日志:
Backdoor.Win32.Delf.ayb    删除成功    2007-06-17 20:28    手动扫描    C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\0F2RGTEF    SACH0ST[1].txt>>upx_a    本机
Backdoor.Win32.Delf.ayb    清除成功    2007-06-19 21:46    手动扫描    SACH0ST.exe>>C:\WINDOWS\system32\wbem\SACH0ST.exe        本机
Backdoor.Win32.Delf.ayb    清除成功    2007-06-19 21:46    手动扫描    SACH0ST.exe>>C:\WINDOWS\system32\wbem\SACH0ST.exe        本机
Backdoor.Win32.Delf.ayb    重新启动计算机后删除文件    2007-06-19 21:47    手动扫描    C:\WINDOWS\system32\wbem    SACH0ST.exe>>upx_a    本机
Backdoor.Win32.Delf.ayb    删除成功    2007-06-19 21:55    手动扫描    C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\0F2RGTEF    SACH0ST[1].txt>>upx_a    本机
Backdoor.Win32.Delf.ayb    清除成功    2007-06-20 21:09    手动扫描    SACH0ST.exe>>C:\WINDOWS\system32\wbem\SACH0ST.exe        本机
Backdoor.Win32.Delf.ayb    重新启动计算机后删除文件    2007-06-20 21:11    手动扫描    C:\WINDOWS\system32\wbem    SACH0ST.exe>>upx_a    本机
Backdoor.Win32.Delf.ayb    忽略    2007-06-20 21:18    手动扫描    C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\S3CTEDWL    SACH0ST[1].txt>>upx_a    本机

SRENG扫描结果:
启动项目
注册表
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
    <ctfmon.exe><C:\WINDOWS\system32\ctfmon.exe>  [(Verified)Microsoft Corporation]
    <msnmsgr><; "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background>  [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
    <SoundMan><; SOUNDMAN.EXE>  [(Verified)Realtek Semiconductor Corp.]
    <RavTask><"C:\Program Files\Rising\Rav\RavTask.exe" -system>  [Beijing Rising Technology Co., Ltd.]
    <RfwMain><; "C:\Program Files\Rising\Rfw\rfwmain.exe" -Startup>  [Beijing Rising Technology Co., Ltd.]
    <ATIPTA><; "C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe">  [ATI Technologies, Inc.]
    <ccApp><; "C:\Program Files\Common Files\Symantec Shared\ccApp.exe">  [N/A]
    <StormCodec_Helper><; "C:\Program Files\Ringz Studio\Storm Codec\StormSet.exe" /S /opti>  [N/A]
    <WebThunder><; C:\Program Files\Thunder Network\WebThunder\WebThunder.exe>  [(Verified)深圳市迅雷网络技术有限公司]
    <TkBellExe><; "C:\Program Files\Common Files\Real\Update_OB\realsched.exe"  -osboot>  [(Verified)RealNetworks, Inc.]
    <C:\WINDOWS\system32\msgox.exe><C:\WINDOWS\system32\msgox.exe>  [N/A]
    <IMJPMIG8.1><; "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32>  [(Verified)Microsoft Corporation]
    <PHIME2002A><; C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName>  [N/A]
    <PHIME2002ASync><; C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC>  [N/A]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
    <shell><Explorer.exe>  [(Verified)Microsoft Corporation]
    <Userinit><C:\WINDOWS\system32\userinit.exe,>  [(Verified)Microsoft Corporation]
    <UIHost><logonui.exe>  [(Verified)Microsoft Corporation]

==================================
启动文件夹
[Adobe Reader Speed Launch]
  <C:\Documents and Settings\All Users\「开始」菜单\程序\启动\Adobe Reader Speed Launch.lnk --> C:\PROGRA~1\Adobe\READER~1.0\Reader\READER~1.EXE [Adobe Systems Incorporated]><N>
[Adobe Reader Synchronizer]
  <C:\Documents and Settings\All Users\「开始」菜单\程序\启动\Adobe Reader Synchronizer.lnk --> C:\PROGRA~1\Adobe\READER~1.0\Reader\ADOBEC~1.EXE [N/A]><N>
[QQ游戏启动加速程序]
  <C:\Documents and Settings\new\「开始」菜单\程序\启动\QQ游戏启动加速程序.lnk --> C:\PROGRA~1\QQGame\Accel.exe [深圳市腾讯计算机系统有限公司]><N>
[腾讯QQ]
  <C:\Documents and Settings\new\「开始」菜单\程序\启动\腾讯QQ.lnk --> C:\PROGRA~1\Tencent\QQ\QQ.exe [TENCENT]><N>

==================================
服务
[Application Experience Lookup Services / AeLookupSvcs][Stopped/Auto Start]
  <C:\WINDOWS\system32\SVCH0ST.EXE -netsvcs><N/A>
[ASP.NET State Service / aspnet_state][Stopped/Manual Start]
  <C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\aspnet_state.exe><Microsoft Corporation>
[Ati HotKey Poller / Ati HotKey Poller][Running/Auto Start]
  <C:\WINDOWS\system32\Ati2evxx.exe><ATI Technologies Inc.>
[ATI Smart / ATI Smart][Stopped/Auto Start]
  <C:\WINDOWS\system32\ati2sgag.exe><>
[Event Log / Eventlog][Stopped/Auto Start]
  <><N/A>
[Human Interface Device Access / HidServ][Stopped/Disabled]
  <C:\WINDOWS\System32\svchost.exe -k netsvcs-->%SystemRoot%\System32\hidserv.dll><N/A>
[Rising Personal Firewall Service / RfwService][Running/Auto Start]
  <C:\Program Files\Rising\Rfw\rfwsrv.exe><Beijing Rising Technology Co., Ltd.>
[Rising Process Communication Center / RsCCenter][Running/Auto Start]
  <"C:\Program Files\Rising\Rav\CCenter.exe"><Beijing Rising Technology Co., Ltd.>
[Rising RealTime Monitor / RsRavMon][Running/Auto Start]
  <"C:\Program Files\Rising\Rav\Ravmond.exe"><Beijing Rising Technology Co., Ltd.>
[system hardware detecting / sscvlSrv][Running/Auto Start]
  <C:\WINDOWS\System32\svchost.exe -k sscvlSrv-->c:\windows\system32\sscvlsrv.dll><Microsoft Corporation>
[VisPlug and Play Removable Storage / tmsscvl][Stopped/Auto Start]
  <C:\WINDOWS\System32\svchost.exe -k tmsscvl-->c:\windows\system32\eventrep.dll><N/A>
[Windowsjoice / Windowsjoice][Stopped/Disabled]
  <C:\Program Files\Common Files\Microsoft Shared\MSINFO\Server.exe><N/A>

正在运行的进程
[PID: 572][\SystemRoot\System32\smss.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 636][\??\C:\WINDOWS\system32\csrss.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 664][\??\C:\WINDOWS\system32\winlogon.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 708][C:\WINDOWS\system32\services.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 720][C:\WINDOWS\system32\lsass.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 872][C:\WINDOWS\system32\Ati2evxx.exe]  [ATI Technologies Inc., 6.14.10.4119]
    [C:\WINDOWS\system32\Ati2edxx.dll]  [ATI Technologies, Inc., 6, 14, 10, 2497]
[PID: 884][C:\WINDOWS\system32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 952][C:\WINDOWS\system32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1068][C:\WINDOWS\System32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1168][C:\WINDOWS\system32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1288][C:\WINDOWS\system32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1568][C:\WINDOWS\system32\spoolsv.exe]  [Microsoft Corporation, 5.1.2600.2696 (xpsp_sp2_gdr.050610-1519)]
[PID: 1652][C:\Program Files\Rising\Rav\RavStub.exe]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 4]
    [C:\Program Files\Rising\Rav\RsCommX.dll]  [rising, 18, 0, 0, 1]
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 5]
[PID: 1844][C:\WINDOWS\System32\svchost.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1992][C:\WINDOWS\system32\wdfmgr.exe]  [Microsoft Corporation, 5.2.3790.1230 built by: dnsrv(bld4act)]
[PID: 384][C:\WINDOWS\System32\alg.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1380][C:\WINDOWS\Explorer.EXE]  [Microsoft Corporation, 6.00.2900.2180 (xpsp_sp2_rtm.040803-2158)]
    [C:\Program Files\Thunder Network\WebThunder\WebThunderBHO_Now.dll]  [Thunder Networking Technologies,LTD, 5, 0, 2, 10]
    [C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\PDFShell.CHS]  [Adobe Systems, Inc., 8.0.0.0]
[PID: 1896][C:\WINDOWS\system32\ctfmon.exe]  [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 156][C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe]  [Adobe Systems Incorporated, 8.0.0.0]
[PID: 1780][C:\Program Files\Rising\Rfw\RfwMain.exe]  [Beijing Rising Technology Co., Ltd., 5, 0, 0, 72]
    [C:\Program Files\Rising\Rfw\RsGuiLib.dll]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 33]
    [C:\Program Files\Rising\Rfw\RSCOMMON.DLL]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 5]
    [C:\Program Files\Rising\Rfw\RfwCtrl.dll]  [Beijing Rising Technology Co., Ltd., 5, 0, 0, 11]
    [C:\Program Files\Rising\Rfw\RsXML.dll]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 2]
    [C:\Program Files\Rising\Rfw\PngDll.dll]  [Beijing Rising Technology Co., Ltd., 18, 0, 0, 5]
[PID: 1156][C:\WINDOWS\system32\wuauclt.exe]  [Microsoft Corporation, 5.8.0.2469 built by: lab01_n(wmbla)]
[PID: 3572][C:\Program Files\Internet Explorer\iexplore.exe]  [Microsoft Corporation, 6.00.2900.2180 (xpsp_sp2_rtm.040803-2158)]
    [C:\Program Files\Thunder Network\WebThunder\WebThunderBHO_Now.dll]  [Thunder Networking Technologies,LTD, 5, 0, 2, 10]
    [C:\WINDOWS\system32\Macromed\Flash\Flash9c.ocx]  [Adobe Systems, Inc., 9,0,45,0]
[PID: 3832][C:\Program Files\Rising\Rav\RsLogVw.exe]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 16]
    [C:\Program Files\Rising\Rav\RsCommx.dll]  [rising, 18, 0, 0, 1]
    [C:\Program Files\Rising\Rav\rsguilib.dll]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 33]
    [C:\Program Files\Rising\Rav\RsXML.dll]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 2]
    [C:\Program Files\Rising\Rav\PngDll.dll]  [Beijing Rising Technology Co., Ltd., 18, 0, 0, 5]
    [C:\Program Files\Rising\Rav\RSCOMMON.DLL]  [Beijing Rising Technology Co., Ltd., 19, 0, 0, 5]
[PID: 1012][E:\软件\SREng.EXE]  [Smallfrogs Studio, 2.3.13.690]

高手帮帮忙啊，已经很多天了